R7KA8M2AFDCAM datasheet(249/295 Pages) RENESAS

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Table 2.96

A/D conversion characteristics (SAR mode : External VDD mode) (4 of 4)

Conditions: AVCC: 1.62 to 2.7 V, VCC: 1.62 to 2.7 V, VREFH0/VREFH: 1.62 V to AVCC

Parameter

Min

Typ

Max

Unit

Test conditions

SAR

mode

Differential

input

High

accuracy

mode

High-speed

channels

(AN000 to

AN005)

(AN006 to

AN011)

Without

channel

dedicated

sample and

hold circuits

Conversion

time*1

—

µs

● ADCLK: 50 MHz

● Sampling time: 40 ADCLK

● Successive approximation time:

10 ADCLK

● Signal source impedance: 50 Ω

or less

Offset error

—

±1

±2.5

LSB

—

Full-scale

error

—

±1

±2.5

LSB

—

Absolute

accuracy

—

±3.5

±4.5

LSB

—

DNL

differential

nonlinearity

error *2

—

±0.75 ±1

LSB

—

INL integral

nonlinearity

error

—

±1.5

±2

LSB

—

Note:

These specification values are applicable when only one ADC16H is operating, DAC12 and ACMPHS are not operating, and there

is no access to the external bus during A/D conversion.

If other ADC unit, DAC12, or ACMPHS is operating or bus access occurs during A/D conversion, values might not fall within the

indicated ranges.

The use of ports 0 as digital outputs is not allowed when the ADC16H is used.

The characteristics apply when AVCC0, AVSS0, VREFH0, VREFH, VREFL0, VREFL, and ADC16H input voltage is stable.

Note 1. Without channel dedicated sample and hold circuits; The conversion time is the sum of the sampling time and the successive

approximation time. Each of the above state is indicated for the test conditions.

Note 2. DNL is measured using the Histogram Method, so the lower limit value is -1.

Table 2.97

A/D conversion characteristics (Oversampling mode and Hybrid mode) (1)

Parameter

Min Typ

Max Unit

Test conditions

Oversampling mode

and Hybrid mode

Resolution

—

bit

—

Oversampling period

Oversampling mode

0.16 —

—

µs

● ADCLK: 50 MHz

● Sampling time: 3 ADCLK

● Successive approximation

time: 5 ADCLK

● Without disconnection

detection assist function

● Signal source impedance: 50

Ω or less

Hybrid mode*2

0.18 —

—

µs

● ADCLK: 50 MHz

● Sampling time: 8 ADCLK

● Successive approximation

time: 5 ADCLK

● Without disconnection

detection assist function

● Signal source impedance: 50

Ω or less

Digital filter

characteristics*1

Sinc filter Initial delay

—

/Fos

—

Group delay —

—

Normalized

Cutoff

Frequency

—

0.033 —

Fin/Fos —

Note:

Fos is oversampling frequency.

When in Hybrid mode, Fos is 1/ (the sum of the oversampling periods of each analog channel assigned to the scan group).

Note 1. See Figure 2.135.

Note 2. Value per channel.

RA8M2 Datasheet

2. Electrical Characteristics

R01DS0438EJ0130 Rev.1.30

Feb 27, 2026

Page 249 of 295

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